<template>
    <div>
      <el-form ref="loginForm" :model="form" :rules="rules" label-width="80px" class="login-box">
        <h3 class="login-title">欢迎登陆</h3>
        <el-form-item label="账号" prop="username">
          <el-input type="text" placeholder="请输入账号" v-model="form.username"/>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input type="password" placeholder="请输入密码" v-model="form.password"/>
        </el-form-item>
        <el-form-item>
          <el-button type="primary" @click="onSubmit('loginForm')">登陆</el-button>
        </el-form-item>
      </el-form>

      <el-dialog
        title="温馨提示"
        :visible.sync="dialogVisible"
        width="30%"
        :before-close="handleClose">
        <span>请输入账号和密码</span>
        <span slot="footer" class="dialog-footer">
          <el-button type="primary" @click="dialogVisible = false">确定</el-button>
        </span>
      </el-dialog>
    </div>
</template>

<script>
    export default {
        name: "Login",
        data(){
          return{
            form: {
              username: '',
              password: ''
            },

            //表单验证，需要在el-form-item元素中增加prop属性
            rules: {
              username: [
                {required: true, message: "账号不能为空", trigger: 'blur'}
              ],
              password: [
                {required: true, message: "密码不能为空", trigger: 'blur'}
              ]
            },

            //对话框显示和隐藏
            dialogVisible: false
          }
        },
      methods: {
          onSubmit(formName){
            //为表单绑定验证功能
            this.$refs[formName].validate((valid) => {
              if(valid){
                this.$router.push("/main/"+this.form.username);
              }else {
                this.dialogVisible = true;
                return false;
              }
            });
          }
      }
    }
</script>

<style scoped>
  .login-box {
    border: 1px solid #DCDFE6;
    width: 350px;
    margin: 180px auto;
    padding: 35px 35px 15px 35px;
    border-radius: 5px;
    -webkit-border-radius: 5px;
    -moz-border-radius: 5px;
    box-shadow: 0 0 25px #909399;
  }

  .login-title{
    text-align: center;
    margin: 0 auto 40px auto;
    color: #303133;
  }
</style>
